From: Eric W. Biederman <ebiederm@xmission.com>
Date: Wed, 13 May 2009 17:00:41 +0000 (+0000)
Subject: net: Fix bridgeing sysfs handling of rtnl_lock
X-Git-Tag: v2.6.31-rc1~330^2~364
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af38f2989572704a846a5577b5ab3b1e2885cbfb;p=pandora-kernel.git

net: Fix bridgeing sysfs handling of rtnl_lock

Holding rtnl_lock when we are unregistering the sysfs files can
deadlock if we unconditionally take rtnl_lock in a sysfs file.  So fix
it with the now familiar patter of: rtnl_trylock and syscall_restart()

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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